| Club: | Chamois Niortais |
| Season: | 2004–05 |
| Manager: | Vincent Dufour (until January 2005) Pascal Gastien (from January 2005) |
| Mgrtitle: | Head coach |
| Chairman: | Jacques Prévost |
| Chrtitle: | President |
| League: | Ligue 2 |
| League Result: | 19th (relegated) |
| Cup1: | Coupe de France |
| Cup1 Result: | Seventh round |
| Cup2: | Coupe de la Ligue |
| Cup2 Result: | First round |
| League Topscorer: | Jean-François Rivière (8) |
| Highest Attendance: | 7,508 (v. Angers, 25 February 2005) |
| Lowest Attendance: | 3,337 (v. Châteauroux, 25 January 2005) |
| Average Attendance: | 4,458 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 season was Chamois Niortais' 13th consecutive season in Ligue 2, the second tier of French football. The team finished second-bottom of the division with 38 points from as many matches, and were subsequently relegated to the Championnat National for the 2005–06 campaign.